body,html{
  font-size:1.2em;
  height:80%;
  margin:0;
  padding:0;
  width:100%
}
.main{
  height:80%;
  margin:30px auto;
  width:90%
}
textarea{
  font-size:1em
}
input{
  font-size:0.8em;
  height:50px;
  margin-top:10px;
  width:120px
}
pre{
  margin:10px 0
}
div{
  position:relative
}
pre+i{
  color:gray;
  position:absolute;
  right:30px;
  top:10px
}
i+i{
  color:gray;
  position:absolute;
  right:10px;
  top:10px
}
i+i:hover,pre+i:hover{
  color:#fff;
  cursor:pointer
}
